Combination jolt ramming and squeezing machine



P. W. GATES.

COMBINATION JOLT RAMMING AND SQUEEZING MACHINE.

APPLICATION FlLED APR-1h 19|7- 1,381,912. Patented June 21, 1921.

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| l I l v P. w. GATES. COMBINATION JOLT RAMMINGAND SQUEEZING MACHINE.

APPLICATION FILED APR-17,1917.

Patented June 21, 1921.

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UNITED STATES PHILETUS w. GATES, or criroaeo, TLLTnors, assrsnon T0 MUMFORD MoLnTive MAGI-IINE'GOMPANY, A CORPORATION or NEWJERSEY.

PATENT OFFICE. I

COMBINATION JOLT RAMMDTG AND SQUEEZING MACHINE.

To all whom it may concern:

Be it known that I, PHILETUS TV GATES, a citizen of the United States, resldlng at Chicago, in the county of Cook and State ramming operations.

This invention is an improvement upon that Set forth in the co-pending application of Wm. P. Krause, filed in the United States Patent Oflice March 29, 1917, Serial No.

Other objects will be set forth and made apparent in the following specification and be shown in the accompanyingdrawings," -1n wh1ch- Figure 1 is a rear elevation of a portion of my machine.

Fig. 2 is a vertical transverse section therethrough.

Fig. 3 is a detail of the casing of the valve for controlling thesupply of air to the jolt valve; and

Fig. 4 is a perspective of the valve plug coacting with the casing shown in Fig. 3.

Like numerals refer to like elements throughout the drawings, in which 10 indicates the base of the machine to which is bolted the upstanding cylinder 11 having the enlarged upper portion 11 and reduced lower portion 11",. Within this cylinder is reciprocably mounted the piston or plunger 12 having the enlarged upper portion 12 and reduced lower portion 12 closely fitting and sliding in the portions 11 and 11 re-.

Specification of Letters Patent.

move the valve-14 to open position, as shown" 1n F 1g. 2. The valve block 13 is further provided with an inlet passage 13 and an outlet duct 13 which communicates with a pipe or tube 15 leading to the inlet 11 in( the upper portion of the cylinder wall 11.

Located above the inlet 11 is the cylinder outlet 11?. Leading to the duct 18 is the supply pipe 17 from the valve casing 18, to which leads and with which communicates the fluid supply pipe 19. A tapered plug valve 20 is rotatably mounted in the valve caslng 18 and is provided with a transverse duct or aperture 20 serving, when in proper position, to furnish communication between pipes 19 and 17 to permit the flow of actuating fluid to the valve block 13 for jolting. The specific jolting and valve-controlling mechanism is not a part of this invention and needs no further description herein beyond the statement that when the valve plug 20, through the medium of the operating handle 20 is moved to position wherein flow of actuating fluid will take place through tube 17, the valve 14 will automatically actuate in conjunction with the plunger 12 to elfect the necessary raising and dropping of the latter to permit it to jolt on the bottom of the cylinder so long as the" inlet 11 from the pipe 25 which leads from valve casing 26, in which' is mounted a conventional two-way or two-position valvehaving a stem 27 operable by an operating handle 27 to move said valve to either of two positions. A fluid supply duct 28 leads to the casing 26. The valve therein, as stated, is of conventional type and needs nodescription herein beyond mentioning that Patented June 21, 1921..

Application filed April 17, 1917. Serial No. 162,627. 7

movement of the handle 27 to one position will permit the actuating fluid to flow flow through pipe 25. When the valve is" moved to the second position, such flow is cut off and the air beneath the piston 12 is allowed to exhaust through inlet 11, pipe 25, and through the valve casing 26 to the outside atmosphere.

A duct or pipe 30 leads from and communicates with the pipe to and communicates withthe valve casing 18, the latter be ing also provided with an outlet 18 opposite point of communication of the duct 30, said outlet being interiorly threaded. The valve plug 20 is provided with a cross aperture or duct20 serving in one position of the valve 20 to permit flow of fluid between duct and outlet 18 This aperture 2O is so related to aperture 20? that said last named flow will be prevented when valve 20 is in position cutting off communication between supply pipe 19 and pipe 17. In other words, when the supply of actuating fluid for jolting is cut off by valve 20 flow .through tube or duct 30 is prevented.

I have found that the quality of the impact during jolting operations may be varied according to the load carried by and the weight of the plunger 12, by varying the size of the outlet ducts which control the escape and influx of air from and to the cylinder 11 beneath the piston 12. Were no outlet provided, during the, jolting operation a vacuum would be present beneath the piston 12 and the machine would not funcsuch communication is not sufiicient to to tally destroy the vacuum mentioned above and the efficiency and proper functioning of the jolt-ramming mechanism is interfered with. It might seem to the casual observer that by increasing the size of the outlet through casing 26 free flow of air beneath the squeezing portion of the plunger would result so as not, to interfere with the joltramming operation. In the event, however, that this outlet were so increased it would be of such size and function that the plunger and table, together with the load carried by the latter, would drop too quickly after the squeezing operation and the result would be to damage or injure molds after the squeezing thereof. It is impractical at the same time to regulate the exhaust after the squeezing operation through the medium of the valve, since the ordinary It will be apparent from the above dethe size of the outlet 18 through which a portion of the entrapped air from beneath the piston 12 is discharged. In short, I have provided an auxiliary supply and discharge duct communicating with the 'por tion of the cylinder beneath the plunger, and have provided means to vary. the outlet through said duct .to permit :regulation or adjustment of the jolting impact.

It will be obvious that other methods of controlling the flow of air to and from beneath the squeezing portion of the plunger may be substituted for the form shown and describedherein; and I do not wishto be restricted to such showing or description except as defined in the appended claims.

What I claim is I 1. In combination, a cylinder, a plunger reciprocably mounted therein, said cylinder and plunger having coacting jolting portions and coacting squeezing portions, a duct to supply actuating fluid to said jolt ing portion of said cylinder, a second duct to supply actuating fluid to said squeezing portion of said cylinder and a third duct to permit flow of relief air to and from said squeezing cylinder during jolt ramming, a valve to open and close said second duct, and a valve to open said first and thirdnamed ducts simultaneously and to close said first and third-named ducts simultaneously.

2. In combination, a cylinder, a plunger reciprocably mounted therein, said plunger and cylinder being provided with coacting jolting portions and coacting squeezing portions, means to provide actuating fluid to said jolting portion of said cylinder, and a relief duct to permit flow of relief air to and from said squeeze cylinder during jolt ramming, said duct being provided with bushing members of different outlet diameters to permit regulation of the flow of air'therethrough to thereby regulate the quality of jolting impact.

In testimony whereof, I have subscribed my name. V

V PHILETUS W.- GATES.

Witnesses:

R. H. WOODLAND, R. TnossEN. 

